Doctors usually treat a snapping psoas tendon with physical therapy that involves stretching and strengthening, anti-inflammatories and corticosteroids, but if this doesn't work, doctors resort to surgically lengthening the tendon. Because the tendon does not have the ability to stretch, surgeons cut slits in the tendon in what is called a partial release of the tendon or a fractional lengthening. "You cut it in a way that allows the muscle to elongate," Dr. Kelly said.
Studies have shown that arthroscopic and open surgery can achieve similar outcomes for this condition. Few studies, however, have studied whether abnormalities in hip structure, specifically femoral anteversion, can impact outcomes. In most people, the center of the femoral neck points toward the center of the hip socket. Femoral anteversion is a condition in which the center of the femoral neck leans toward the front of the socket. This causes the knee and foot on the affected side to rotate internally or twist toward the midline of the body.
In December 2006, HSS researchers started a prospective registry of all hip arthroscopy procedures performed during a three-year period, 2006 to 2009, by a single, high-volume arthroscopic hip surgeon, Dr. Kelly. The study presented at AOSSM included all patients who underwent a psoas tendon lengthening at the time of surgery, a minimum of six months follow-up, and a preoperative high-resolution computed tomography (CT) scan to detect femoral anteversion. Patients were not included in the study if they had previous tendon hip surgery or hip trauma.
Sixty-seven patients underwent arthroscopic lengthening of a symptomatic psoas tendon, either in isolation or in conjunction with treatment for hip impingement. CT scans showed that 19 of 67 patients had high anteversion. The researchers assessed clinical outcomes both
|Contact: Phyllis Fisher|
Hospital for Special Surgery